Improvement in machines for dressing staves to barrels



UNrrnD TATES PATENT OFFICE. l

WILLIAM TRAPP, OF ELMIRA, NEV YORK.

IMPROVEMENT IN MACHINES FOR DRESSING STAVES TO BARRELS.

Specification forming pai-t of Letters Patent No. 43,934, dated August 23, 1864; antedated August 16, 1864.

To @ZZ whom, it may concern.:

Be it known that I, WILLIAM TRAPP, of Elmira, in the county of Chemun g and State of New York, have invented a new and useful Improvement in Stave-Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. t u' My invention or improvement in stave-machines consists, mainly, in inclining the bed (upon which the stave lies to be dressed) side- Wise in relation to the cutters, and in employing the weight of the feed apparatus to increase the action or friction of the feed-rollers;

and my invention also consists in the peculiar construction and arrangement of the machine.

In the accompanying drawings, Figure 1 is a front view of my machine. Fig. 2 is a side view of the saine. Figs. 3, 4, 5, and 6 are detached views of parts of the machine'.

The main frame of my machine is seen at A, Figs. 1 and 2. Within this frame is another frame, T, arranged to slideup and down, earrying the feed devices. Upon the main frame A are two pulleys, B and C, with axles carrying two sets of cutters in the usual manner for dressing both sides of a stave at the same time. The sliding frame is provided with friction-rollers t, Fig. 2, and carries the feedrollers I) and E, Fig. 1, the cog-wheels I and L, the pinions AEl and K, and the pulley G, all ot' which rise and fall with the sliding frame.

Motion is given to the machine by means of pulley G and a band conneced with a suitable power, the band being kept under proper tension (as the pulley Gr rises or falls) by means of a guide-roller, d, connected with the main frame A.

The staves are fed into the machine between the two feed-rollers D and E, Fig. 1, and passing through the machine, as shown at F, Fig. 2, both sides are dressed at-the same time by the two sets of cutters.

A peculiar feed plate (seen in Fig. 3) is placed in the upper part of frame A, locking the latter together and preventing it from spreading under the strain in dressing a stave. The beds O and k support the stave in passing the machine. Thestave rests on the edges of these beds near the cutters, these edges being the highest. As thesebeds are inclined downward from the cutters, both crooked and winding stares touch only the upper edges of the beds, so as to give a suitable bearing in cutting the stave. Close to the upper cutters are two caps or binders, one seen at p, Fig. 1, in dotted iines, and the other atY, Fig. 6. The binderp is drawn down uponthe stave by the weight of the feed works, as will be hereinafterexplained, and the cap Y has a 'spring-bearing regulated by means of the adjusting-plate r1., Fig. 6, the set-screw b, and the springs c c. Thus the stave is firmly held on both sides of the cutters, while at a greater distance from the cutters it has full room to play up and down, and thus accommodate the crooks and winds in the staves. The bed O is also inclined sidewise, as seen in Fig. 4, in order to raise the thin edge of split staves, and thus cut mainly from the thick edge in rounding and barking the stave.

- The two sets of cutters are placed opposite the opening P in the bed-plate, one set above` and the other below, so that the pressure of one set of cutters upon the stave in dressing the same is eounteraetcd by the other setv of cutters. At the same time the cutters, being opposed, will dress the stave of uniform thickness, following the crooks and winds of the split stave.

The sliding frame T, carrying the feedworks is balanced or partially suspended upon the binder p, Figs. land 6, and thus employed as a weight to hold the stave in place. This weight is also in part thrown on the stave through the upper feed roller; and a lever, f,

and weight g are arranged to co-operate in holding the stave and easily balancing the feed-works. The binder p, Figs. l and 6, is provided with two slides, p', Fig. 1, carrying a pulley, Q, over which passes a strap, It. One end of this strap is connected with a coiled spring, S, attached to a cross-bar at the bottom of the main f1 ame A, and the other end is attached to a cross-bar, T', Fig. l, ot' the sliding frame T. By this arrangement the weight of the sliding frame and of the feed-works is in pazt thrown upon the binder p and stave, the coiled spring giving a gentle and yielding action to suoli weight. This ac*- tion, together with that of the feed-rollers, holds the stave steady and yet carries it forward by a proper pressure against the cutters.

The lever f, Fig. 2, and an adjustable Weight, g, are arranged to act upon the sliding frame and feed-works. The lever is forked and the branches of the fork are connected with the sliding frame by means of pivots or fulcra i, Fig. 2, dotted lines 5 and two studs, m, Fig. 2, dotted lines, on such branches rest in the curves of the staples n, Fig. 1, which Aare suspended from the sliding cap 1', Fig. 2.

The coiled spring S is provided with a Wooden cap, V, to which a rod, U, is attached. This rod extends down to the bottom ot' the spring, Where a screw-nut, O', Fig. 5, secures By means ot' this screwitto the crossbar. nut the tension of the spring may be regulated at pleasure. A staple, W, is attached to the sliding` cap H and -passes up through the coiled spring and Wooden cap V.

of cutting mostly from the thick edge of the stave in rounding and backing the same,

without wasting the thin edge of the stave, l

3. The use ot' the changeable beds O and Ol for altering the machine, and thus adapting it to Working different kinds of staves, substantially as set forth.

4. The sliding frame T for carrying the feed- Works up and down, substantially as' set forth. v

5. vThe employment of the feed-works or feed devices as a Weight acting on the. binder to hold the stave steady, substantially as described. V

6. The arrangement and combination ot1 the feedrollers D and E, the cogwheels I and L, and the pinions H and K with the sliding fi ame T, substantially as set forth.

VILLIAM TRAPP. Witnesses:

W. THOMPSON, DANiEL BREED. 

